Amelia (Caterina Scorsone, left) will walk down the aisle in the Season 12 finale of “Grey’s Anatomy” while Jo (Camilla Luddington) reveals to her boyfriend why she never will. Photo: ABC

Episode 23 of “Grey’s Anatomy” was nothing short of dramatic, from Meredith’s shocking hookup to Owen and Amelia’s surprising engagement. But according to the synopsis of the show’s Season 12 finale, fans of the hit ABC series might want to batten down the hatches, because there’s a storm of chaos headed to Grey Sloan Memorial, and it will result in some serious drama — including a death.

TVLine dished that someone will die in episode 24, titled “Family Affair.” And according to Kelly McCreary, who portrays Maggie on the medical drama, that’s only one aspect of how the finale will tug at viewers' heartstrings.

“It’s a really emotional episode,” the actress teased. “It’s all about matters of the heart and the culmination of a lot of challenges that we’ve seen in the major relationships, [especially] April (Sarah Drew) and Jackson (Jesse Williams); Callie (Sara Ramirez) and Arizona (Jessica Capshaw); and Owen (Kevin McKidd) and Amelia (Caterina Scorsone).”

In episode 23, Amelia was moved by Kyle’s (Wilmer Valderrama) abrupt and tragic death to live her own life to the fullest. So, at the very end of the installment, she proposed to Owen, and he accepted! But it looks like Amelia may be getting cold feet in episode 24, which is when the doctor is set to walk down the aisle.

“I am flipping out here,” viewers can hear Amelia say in the promo video for “Family Affair.” But Meredith reassures her sister-in-law that she’s there for her — even if that means distracting guests while Amelia makes a run for it.

While Meredith and Maggie spend episode 24 supporting Amelia on her big day, Ben (Jason George) will “leap into action to help a friend.” That friend happens to be April, who appears to go into labor during what looks like the middle of Owen and Amelia’s ceremony. Although Ben was suspended from the hospital, he won’t let his punishment prevent him from helping a friend in need. But could his decision result in even more dire consequences?

As Owen and Amelia prep for their wedding day, Alex and Jo will discuss why they won’t ever have one when Jo reveals the secret she’s been keeping from Alex. In episode 23, Jo turned down Alex’s proposal — a response that surprised audiences and Alex alike. During an interview with Cosmopolitan magazine, Luddington dished that viewers will find out why Jo refused to accept Alex’s proposal.

“I have been approved by ABC to say that ‘questions will be answered,’” she teased. “Whether it’s the question, who knows, but things will be revealed.”

What do you think Jo could be hiding from Alex? Which character do you think will meet their demise in the Season 12 finale? Sound off in the comments section below with your theories. “Grey’s Anatomy” airs Thursdays at 8 p.m. EDT on ABC.